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Altera_Forum
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12 years ago

Increasing SPI Clock Speed via Software

Hi, the SPI core I integrated in my SoPC is set to 400kHz. Now I would like to increase the speed up to 20 MHz. I had to set the clock speed to 400kHz because SD-Cards only support clock speed ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

AFAIK the clock speed in the SPI device is fixed at generation time and can't be changed. You can either make your own SPI master hardware component, or generate two SPI masters with different clock frequencies and connect them to muxes so that you can choose which one to use at run time.